Camera moves location when rendered. Why?
Without seeing the file, I kind of don't think it is an object (butterfly) problem. My guess is that you have different viewport and camera focal length and/or shift settings (make them the same). Maybe you have lock camera to viewport on. Turn that off (in the right side tabs).
Also maybe instead of appending try opening both blender files in separate 'blenders', and then copy/paste the butterfly object rather than appending. You might be appending some subtle thing that gets pulled in by the append functionality.